On Thursday, February 8, 2018 at 6:09:35 AM UTC-5, Kosmas Kaifel wrote:
> ...
> Caused by: org.apache.commons.dbcp.SQLNestedException: Cannot get a 
> connection, pool error Timeout waiting for idle object
> ...

 It is possible that your connection pool is too small for the load on the 
service, or that the DBMS has its connection limit set too low.  It is also 
possible that you have connections which become unusable (typically "idle 
in transaction").  The first step is to figure out which condition is 
causing the pool to time out.

If you are using PostgreSQL for your DBMS, then each connection is 
represented by a separate process on the DBMS host, and the process' 
description is set to show the state of the connection.  
https://www.postgresql.org/docs/9.2/static/monitoring-ps.html may be 
helpful.  You may find other messages in the DSpace log that give more 
information.  Something like the 'netstat -t' command, run on the DSpace 
host, can show you how many client connections are open from that host.

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